Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Myungji Suh

Dong Hyun Ko

Kyong Yong Cha

Ye Seul Hwang

Minkee Choi

Joohyuck Lee

Jun Kyu Han

Jun Han Kang

Sunhwan Hwang

Daeheung Choi

Sang Jin Han

Seongmin Kim

Hyunseok Nam

Kyunglim Hyun

Kyung Moo Lee

Songhyun Lee

Yeonwoo Choi

Jaewon Jeong

A method for manufacturing a catalyst for a hydrogenation reaction, the method including: preparing a polymer support including a repeating unit of Formula 1, and supporting a catalytic component on the polymer support: wherein in Formula 1,means a point where the repeating units are linked, L1, L2 and L3 are O, R1 and R2 are the same as or different from each other, and are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms, m is 0 or 1, and p and q are each independently an integer from 0 to 4.

Catalyst for hydrogenation reaction and method for manufacturing the same

A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support comprises a repeating unit represented by Formula 1.

Catalyst for hydrogenation reaction and method for producing same

The present specification relates to a method comprising: (A) mixing a ferrite-based catalyst molded article with diluent material particles; and (B) adding the mixture to a catalyst reactor, and a method for preparing butadiene using the same.

Catalyst loading method and method for preparation of butadiene by using same

A catalyst for a hydrogenation reaction including a polymer support and a catalytic component supported on the polymer support. The polymer support consists of a repeating unit represented by any one of Formulae 5 and 7 to 13.

A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1.

A catalyst for a hydrogenation reaction including: a polymer support; and a catalytic component supported on the polymer support. The polymer support includes a repeating unit represented by Formula 1 or 2.

Provided is a catalyst for an oxidative dehydrogenation reaction that comprises: a porous support; a core portion supported on the porous support and containing a first zinc ferrite-based catalyst; and a shell portion supported on the core portion and containing a second zinc ferrite-based catalyst, in which the first zinc ferrite-based catalyst and the second zinc ferrite-based catalyst are different from each other.

Catalyst for oxidative dehydrogenation reaction, and method for producing same

The method for preparing a ferrite-based coating catalyst including mixing a support, a ferrite-based catalyst, a cellulose-based additive, and water, in which a content of the cellulose-based additive is 0.5 wt % or less based on a total weight of the ferrite-based catalyst.

Method for producing ferrite-based coating catalyst and method for producing butadiene by using same

An exemplary embodiment of the present application provides a method for preparing butadiene, the method comprising a process of performing an oxidative dehydrogenation reaction by introducing a reactant comprising butene, oxygen, nitrogen, and steam into a reactor which is filled with a catalyst, in which during a first start-up of the oxidative dehydrogenation reaction, the oxygen is introduced into the reactor before the butene, or the oxygen is introduced into the reactor simultaneously with the butene.

Method for producing butadiene

The present specification provides a method for preparing 1,3-butadiene, the method comprising: (A) obtaining a first product comprising a light component, 1,3-butadiene, and a heavy component from a reactant comprising butene; (B) separating the heavy component from a second product comprising the 1,3-butadiene and the light component by condensing the heavy component after heat exchanging the first product; and (C) separating concentrated heavy component by reboiling the condensed heavy component.

Method for preparing 1,3-butadiene

The method for preparing a ferrite-based coating catalyst including mixing a support, a ferrite-based catalyst, and water in a coating machine which is a rotating body, in which a weight ratio of the water based on a total weight of the support is 0.15 to 0.3.

Method for producing ferrite-based coated catalyst and method for producing butadiene by using same

Provided is a catalyst system for oxidative dehydrogenation, a reactor for preparing butadiene including the catalyst system, and a method of preparing 1,3-butadiene. In the catalyst system for oxidative dehydrogenation, a coating catalyst is diluted with a specific dilution filler and a reactor is filled with the diluted catalyst, or a reactor is filled with a catalyst for oxidative dehydrogenation so that the concentration of an active ingredient included in the catalyst gradually increases in the direction from reactants inlet in which reactants are fed into the reactor to products outlet. The catalyst system for oxidative dehydrogenation can efficiently control heat generated inside a reactor, thereby improving conversion rate, selectivity, yield, and long-term stability of a catalyst.

Catalyst system for oxidative dehydrogenation, reactor for preparing butadiene including catalyst system, and method of preparing 1,3-butadiene

Provided is a catalyst system for oxidative dehydrogenation, a reactor for oxidative dehydrogenation including the catalyst system, and a method of performing oxidative dehydrogenation using the reactor. In the catalyst system, a fixed-bed reactor is filled with a catalyst for oxidative dehydrogenation in an n-stage structure (n being an integer of 2 or more), wherein each stage of the n-stage structure satisfies Equations 1 and 2 as claimed so that the concentration of an active ingredient included in the catalyst gradually increases in the direction in which reactants are fed into the reactor. Heat generated inside the reactor may be effectively controlled during oxidative dehydrogenation, thereby improving conversion rate, selectivity, and yield. In addition, catalyst deterioration may be reduced, thereby improving long-term stability of the catalyst.

Catalyst system for oxidative dehydrogenation, reactor for oxidative dehydrogenation including catalyst system, and method of performing oxidative dehydrogenation using reactor

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Daejeon, South Korea

Myungji Suh